ok well heres the specs au motorau injectors and fuel railbbm el auto ecut5 well heres the problem when i set the base timing at anything more than 2 deg atdc it pings its head off and this is running bp ultimate 98please help?

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EBII ED Grill AU rebult motor ea t5 gli upgraded to xrghiai was just holding the lead and feeling the jolt it was giving me and seting the timeing from that

ive got my timing at 1 degree BTDC and runs great but not on normal unleaded its got to be the good stuff haha have you tried checking your spark plugs? the gap or you sure you have reset the base timing ?

ive got my timing at 1 degree BTDC and runs great but not on normal unleaded its got to be the good stuff haha have you tried checking your spark plugs? the gap or you sure you have reset the base timing ?

yes done all of that still pings

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EBII ED Grill AU rebult motor ea t5 gli upgraded to xrghiai was just holding the lead and feeling the jolt it was giving me and seting the timeing from that

If the head has been machined or there is carbon on the pistons, that could be a cause. Mine pinged on 98 octane on hot days when under load after shaving a lot off the head (it was bent like a banana).

You could also try the Autolite 985 spark plugs, they eliminated the pinging in mine, a bit hard to find though. I found the NGK XR6 plugs to be good too, but not as effective as the Autolites in getting rid of the pinging.

I'm running LPG (it's about 102 octane) now and the NGK plugs and no pinging at all.

At worst case (if nothing else works), you could try a taller head gasket and cleaning the piston tops while your're in there.

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